Improved wooden pavement



5eme @tutti JOHN R. OUsHiRR, -ORNRW YORK, N. Y.-

Lette/rs Patent No. 88,455, dated March 30, 1869.

IMPROVED WOODEN PAVEMENT.

The Schedule referred to in these Letters Patent and making part of theea'me.

To all whom it may concern Bc it known that I, JOHN R. OUsH1nR,of thecity,l

county, and State of New York, have invented a new and usefulImprovement in Pavements, of which the following is a full, clear, andexact description, reference being had to the accompanying drawing,forming part of this specification, and in which- Figure l represents aplan of a section of my im. proved pavement, ready for laying down;

Figure 2, a vertical section of the same, taken as indicated by the line:n x in iig. 1 and Figure 3, a similar section, taken as denoted by theline z z.

Figure 4 is an isometrical perspective view of one of Vthe blocks,whichl make up each section ofthe pavement.

Similar letters-of reference indicate corresponding parts.

My improvement relates to wooden pavements made up, for the most part,of wooden blocks, arranged to present an end grain, or surface to thefoothold, and put .together in sections, composed of a number of suchblocks connected, or tied together.

My invention consists in a combination of rectangularly-shaped blocks,having dovetail-shaped grooves in their several sides, and intersectingor transverselydisposed locking-strips, of double-dovetail form, in suchmanner as, that while the several blocks, in a section, lie separate, ordetached, the one from the other, the whole are hrmly united together inevery direction, both horizontally and as regards vertical depression,and the locking-strips made to form a bearing-surface for cementintroduced between the blocks, and to prevent the same from escaping orrunning through the section.

Referring to the accompanying drawing, A A represent wooden blocks, ofrectangular form, arranged so as to present their end grain, or surface,to form a foothold, and made withv dovetailed-shaped grooves a b, intheir several sides, the one set of grooves, a, which are arranged on orin two opposite sides of each block, being disposed above the othergrooves, b, cut in the other two sides of the block.

In or through these grooves a b, of a sufficient number of blocks tocompose a section, are introduced, or driven locking-strips B C, of adouble-dovetailed shape in their transverse section, the one set ofstrips, B, fitting within or through the dovetail grooves c, and servingto support vertically, and to tie horizontally, in the one direction,said blocks, while the other set of locking-strips, C, is made to lit`within or through the other dovetail grooves, b, to further aid in thevertical support of the blocks, and to tie, or connect themhorizontally, iu a direction at right angles to the horizontal locksecured by the irst strips B.

it is preferred to so arrange these cross-locking strips,

the blocks themselves lie separate, or distinct from each y other.

I therefore ill up the spaces between the bloc-ks with cement, D,composed of any suitable material or materials, which not only serves togive solidity to the section, but, without any special grooving of thehlocks to improve the foot-hold on the surface for horses, and toprevent water from working its Way between and below the blocks, to rotthe latter.

By the arrangement of the locking-strips B C, it will be observed that,in putting Iin the cement, the same is restrained from running throughor escaping from between the blocks in a vertical direction, by thelockingstrips, which thus form bearing-surfaces for the cement, on bothsides or faces of the section, and eifectually interrupt or closecommunication down between the Separated blocks. Each section thusconstructed and filled in with cement should be made of convenient sizeto handle, to facilitate the laying down and taking up of the pavement,as occasion may require.

A pavement made as herein described, will be found veryV durable,iseasily and cheaply got up, needs no sub-sills, or foundation-planks torest upon, and involves no waste of lumber or material. The same, too,presents a good foothold and desirable runningssurihce for vehicles, iseasily and quickly put together, there being, of necessity, no bolts orscrews, and admits of a speedy removal of the blocks in a section, or ofa single section from an adjacent one, when necessary for-repair, and,in laying down gas-pipes, or doing any underground work, rendersunnecessary the tearing up of a large portion of the pavement.

What is here claimed, and desired to be secured by Letters Patent, ispThe double-dovetailed strips B G, formed with a rectangular centralportion longitudinally, in combination with the blocks A, havingdovetailed grooves' a b on their sides, so arranged that said centralportions of the strips B C4 are made to cross each otherholding theblocks a given distance apart, and forming bearings for cement, to fillthe spaces between said blocks, substantially as shown and described.

JOHN R. CUSHIER. Witnesses:

HENRY T. BROWN, J. W. GooMBs.

